Hydraulic power-assisted actuating arrangements

Details Hydraulic power-assisted actuating arrangements Hydraulic power-assisted actuating arrangements

1978-01-09

1980-02-05

Maslousky, Paul E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

92121, 92136, F15B 910, F01C 900, F01B 900

Patent

active

041866517

ABSTRACT:
An hydro-mechanical torque amplifier such as a power steering unit for road vehicles. In the prior art, torque amplifying hydraulic pressure was applied to the linear part of a ball-screw geared to the output shaft such that all power went through meshing gear teeth, necessitating robust construction thereof. In the present invention, torque amplifying hydraulic pressure is applied to a vane motor on the output shaft such that hydraulic power does not pass through gear teeth, enabling a lighter and less costly construction.

REFERENCES:
patent: 2748881 (1956-06-01), Holly, Jr.

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